2. dredge the near-water environment. The water source of Taihu Lake is located in the Tiaoxi River system in Tianmu Mountain, Zhejiang Province, with a drainage area of 64, square kilometers, and 7% of the water is injected into Taihu Lake. In addition, Nanxi water system, which originated in Yili mountain area, covers an area of 8, square kilometers, and 8% of the water flows into Taihu Lake, with short source distance, limited pollution along the way, pure water quality and abundant water. Therefore, as long as the estuaries and rivers of the above two major water systems are well dredged and protected, enough water can be saved, the source water of Taihu Lake can be replenished smoothly, the water circulation of Taihu Lake itself can be promoted, the discharge of sewage can be stopped, and the dredging and dredging of the source water system can be done well, so that clean source water can enter Taihu Lake. In addition, the surrounding tributaries, streams and ponds should be dredged and dredged, unnecessary dams should be removed, and sluices should be controlled to form a natural water environment in which Taihu Lake water enters actively and flows out properly.
3. cutting off the pollution source is an important measure. Any factory that discharges pollutants in the canal system around Taihu Lake must meet the pollution control standards before production. It is necessary to ban undercurrent sewage from entering Taihu Lake and canal water system. Special attention should be paid to the communication between the ponds and rivers along the lake and the canal. It is forbidden for housing developers to use the river channel as a sewage drainage channel. It is necessary to restore the river channel that has been developed as a waste landfill, and if necessary, demolish the house and return it to the river, so that the remaining sewage can be naturally purified through the dense river ditch network unique to the south of the Yangtze River and avoid directly flowing into Taihu Lake.
4. Comprehensive management. It is equally important to control the sewage in Taihu Lake and the pollution in Beijing-Hangzhou Canal. The injection and discharge of Taihu Lake connects the water system of Beijing-Hangzhou Canal. The pollution of the canal water system will certainly make the Taihu Lake water system suffer. The pollution of canal water system mainly focuses on management. Governance and management should be comprehensively considered and arranged as a whole. It is necessary to carry out long-term supervision and set up special institutions to monitor the pollution of lakes and rivers. At the same time, it is necessary to formulate local laws and regulations to make tourism, shipping, planting, breeding and construction under effective supervision. Let the whole society care about Taihu Lake and the environment, and let Taihu Lake nurture and nourish its children forever.